Handle ES returning Integer data

[thumbtack-eee]

No description provided.

[codecov]

Codecov Report

Merging #10 into master will decrease coverage by 0.07%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master      #10      +/-   ##
==========================================
- Coverage   48.04%   47.96%   -0.08%     
==========================================
  Files          62       62              
  Lines        1942     1945       +3     
  Branches       82       81       -1     
==========================================
  Hits          933      933              
- Misses       1009     1012       +3

Impacted Files	Coverage Δ
...rel/datasources/elasticsearch/EsValueMappers.scala	17.64% <0%> (-3.79%)	⬇️

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